#include <stdio.h>

#define M 10

int main()
{
    printf("Hello World\n");
    
    //printf("Hello World\n");
    //printf("Hello World\n");
    //printf("Hello World\n");
    //printf("Hello World\n");
    //printf("Hello World\n");
    //printf("Hello World\n");

    printf("max = %d\n", M);

#ifdef M
    printf("%d\n", M);
#endif
    return 0;
}
